Jan 16, 2017

v6.2, 2017 January 14th:
Fix possible infinite recursion in sqrt.
Add support for built-in programs.
Full implementation of the EE library.

v6.1, 2017 January 7th:
Fix P->R routine in some cases.

v6.0, 2016 December 30th:
First version of Marine Navigation Library.
First version of Aviation Library.
Fix some issues found while implementing the new libraries.
Add graphics in some help messages.